HYDRO26834

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 12/7/1990
• Doc Name: 4th Qtr 1990 Inspections
• From: PEABODY COAL CO
• To: MLRD
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Ron Gehrke DATE
NPDES I.D. NO.: - D.P. 004
10/20/90
FACILITY CONFIG Cross-Valley Pond DATE LAST INSPECTION: 7/23/90
SITE NAME: South Section 12 Pond #004 LOCATION:SWY.SE'/., Sec.~;~87p
MINE NAME: eneca ine ea o y oa o LOCATION: mi. o ay en,
MINE I.D. N .: ermi - - OWNER'S R .. on u ian, upt.
Circle or write in appropriate response
1. Foundation preparation (removal of vegetation, stumps, topsoil): _ © No N/A
2. Lift thickness: 12 in. N/A
3. Compaction according to approved plan: es No N/A
4. Burning (specify extent and location): Yes No N/A
5. Angle of slope: 5:1 upstream, 2:1 downstream Total = 7:1 N/A
6. *Seepage (specify location, color, and approximate volume)
_ From underdrain pipes: Yes 1~ N/
At isolated points on em an ment s open: Yes N A
At natural hillside: Yes N/A
Over widespread areas: Yes N/A
From downstream foundation area: a No N/A
"Boils" beneath stream or ponded wa er: es JT~ N/A
7. Cracks or scarps on crest: Yes ® N/A
8. Cracks or scarps on slope: Yes ® N/A
9. Sloughing or bulging on slope: Yes ® N/A
10. *Major erosion problems: Yes ~l N/A
11. Surface movements in valley bottom or on hillside: Yes ® N/A
12. *Erosion of toe: Yes ~ N/A
13. *Water impounded against toe: Yes Q N/A
14. Existing embankment freeboard: 4.9 feet
15. Increase Decrease in water level: 0 feet
16. Cracks, bulging, or erosion on upstream face: Yes ~ t1/A
17. Visible sumps or sinkholes in slurry surface: Yes No
18. *Clogging
Spillway channels and pipes: Yes N/A
Decant system: Yes N/A
Diversion ditches: Yes N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yes N N/A
Decant system: Yes N/A
20. Trash racks clear and in place: 'e9 No N/A
*Major adverse changes in these items could cause instability and should be reported to
the Engineering Manager and Mine Superintendent for further evaluation. Adverse condi-
tions noted in these items should normally be described (extent, location, volume, etc.)
in the space on the back of this sheet.